I really loved the game but it is waaaaay too hard, well maybe not too hard but is at the begining. The first enemy just appears out of nowhere on the player (which is something that should come later), and you start with too many red bullets. I believe that making the game simpler, by removing the red bullets that you start with, but forcing the player to get some bullets if they really want to get stronger would be a good way to make the game better.